HOpCreatePolyline

Detailed Description

class HOpCreatePolyline : public HOpConstructPolyline

The HOpCreatePolyline class draws a polyline.

HOpCreatePolyline maps event information to the HOOPS routine HC_Insert_Polyline. This provides the basic functionality for dynamically creating a temporary overlayed polyline in the view plane based on pointer input. The polyline points are stored in a protected member array until a double click event is passed, then the array is inserted into the HOOPS database. The operation consists of the following steps:

  1. Left Button Down: The operation is initiated and the first point of the polyline is recorded.
  2. No Button Down and Drag: Rubberband line segment to the desired position of the next point.
  3. Left Button Down: The next point in polyline is recorded and continues until the user double clicks the left mouse button.
  4. Left Button Double Click: The polyline is finalized and the polyline primitive is flushed from the scene and a new one is inserted into the model.
More Detailed Description: see event methods.

Public Functions

HOpCreatePolyline(HBaseView *view, int DoRepeat = 0, int DoCapture = 1)

Constructs an HOpCreatePolyline object.

Parameters:
  • view – A pointer to an HBaseView object.
  • DoRepeat – An integer denoting whether this is a repeatable operator. This parameter has been deprecated.
  • DoCapture – An integer denoting whether the mouse state should be captured, which means that all mouse events should be received after a mousedown, even if it leaves the window. This parameter has been deprecated.
virtual ~HOpCreatePolyline()
virtual HBaseOperator *Clone()

Creates a new operator which is a copy of the current operator. The user is responsible for deleting the newly created operator.

Returns:A pointer to the newly created HOpCreatePolyline object.
virtual char const *GetName()
Returns:A pointer to a character string denoting the name of the operator, which is ‘HOpCreatePolyline’.
virtual int OnLButtonDblClk(HEventInfo &hevent)

OnLButtonDblClk places the final mouse position into the temp array, then inserts the array into the database as a HOOPS polyline. This function also takes care of any cleanup.

Parameters:hevent – An HEventInfo object containing information about the current event.
Returns:An HOperatorReturn indicating the status of the event.